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  1. Astronomy

    Cosmic Melody

    An astronomer has converted fluctuations in the density of the early universe—the seeds of the first galaxies and stars—into audible sound.

    By Ron Cowen
  2. Physics

    Antimatter loses again

    A study of subatomic B mesons reveals a new way in which the laws of physics differ for matter and antimatter, providing another clue to why there's almost no antimatter in the universe today.

    By Peter Weiss
  3. Planetary Science

    Finding a lunar meteorite’s home

    Scientists have for the first time pinpointed the source of a meteorite that came from the moon.

    By Ron Cowen
  4. Materials Science

    Bacterial glue: The stuff that binds?

    A sticky slime secreted by bacteria could soon find its way into a host of wood products, including plywood and particleboard.